Alert archive / Georgia / Special Weather Statements in 2023
Special Weather Statement, NWS Charleston, SC
NWS Charleston, SC issued this special weather statement at Aug 16, 2023, 7:21 PM EDT for Long County, Georgia. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 2023, 7:21 PM EDT (23:21 UTC)
- Expired
- Aug 16, 2023, 7:45 PM EDT
- In force
- 24 min
- Issued by
- NWS Charleston, SC
- Hail
- 0.00 in
- Wind
- 55
County Long County, GA
The radar
The Charleston,SC radar (KCLX), 120 km from the middle of the area, began a volume at 23:26 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 11.4 hours before the alert went out and 200 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 55 J/kg
- Mixed-layer CIN
- -178 J/kg
- Mixed-layer LCL
- 1015 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Aug 16, 5:54 PM EDT, 1 hour 27 minutes earlier.
Area forecast discussion, Aug 16, 5:54 PM EDT, 1 hour 27 minutes before
Area Forecast Discussion National Weather Service Charleston SC 554 PM EDT Wed Aug 16 2023 .SYNOPSIS... A cold front will linger over the region into Thursday. Another front could move into the area on Saturday, before high pressure returns early next week. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... Quick update has been issued to adjust near term pops a bit. Late afternoon KCLX radar data showed an expanding area of convection over parts of the Charleston Tri-County. This area of tstms will post a flood risk over the next 1-3 hours as it treks across Dorchester, Berkeley and possibly parts of Charleston County. Unofficial mesonet sites in northern Dorchester County have reported as much as 2 inches of rain in less than 30 min. Impressive rainfall rates like this will be capable of producing minor flooding of low-lying and poor drainage areas. Convection seems progressive enough that flash flooding will not be too much of an issue, but trends are being monitored. Farther south, convection aligning along outflow boundaries working north out of far Southeast Georgia will move north of the Altamaha River over the next few hours. Convection should refocus down that way and pops were adjusted slightly to reflect this. Some of this may leak north of the Savannah River later this evening as well before shifting offshore overnight. Overall, pops 60-80% look reasonable over the next few hours. && .SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY/... Mid level troughing will generally reside over the eastern CONUS through late week, as a stronger wave shifts across the Great Lakes and into the Northeast. The trough will begin to retreat over the weekend as a large ridge building over the central portion of the country expands eastward. At the surface, a weak front/trough will reside inland with higher pressure offshore. Weak shortwave energy passing through on Thursday will keep fairly high rain chances in the forecast, with better coverage expected closer to the coast and over the eastern half of the forecast area where the axis of deeper moisture resides. Held PoPs below 15% for Friday with drier air and little in the way of larger scale forcing. Showers and thunderstorms will then return in the forecast for Saturday with another front moving into the area, but models still show a decent bit of mid level dry air so coverage should stay isolated to scattered. High temperatures in the upper 80s to around 90 on Thursday will warm to the lower/mid 90s for Friday and Saturday. Lows will be in the 70s. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... A large mid level ridge over the central US will expand eastward early next week. High pressure should become the dominant feature at the surface. A cold front could impact the area very late or even beyond the long term period mid week. Highest rain chances will be on Sunday with a bit deeper moisture and some models indicating a weak wave moving towards the coast or even onshore. Less coverage is anticipated for Monday and Tuesday. Temperatures are expected to be near to slightly above normal. && .AVIATION /22Z WEDNESDAY THROUGH MONDAY/... Showers and thunderstorms are beginning to develop across the region, with convection at or in the vicinity of the KCSH and KJZI terminals now. Expect coverage to increase through the afternoon with the best chances for TSTMS between 20Z and 00Z this evening. Any thunderstorms could produce brief flight restrictions. Otherwise, VFR weather will persist through early afternoon Thursday. A touch of shallow fog is possible tonight although confidence is too low to include in the terminal forecasts at this juncture. Extended Aviation Outlook: Periodic flight restrictions are expected through Thursday, mainly during the afternoon/evening hours in association with showers and tstms. && .MARINE... Southerly winds will persist across the coastal waters through tonight with some modest gustiness anticipated. But gusts and waves will remain below Small Craft Advisory. However, showers and thunderstorms will continue to impact the waters through tonight, particularly off the South Carolina coast. Expect higher winds and waves in and near thunderstorms. Thursday through Monday: Winds and seas are expected to remain below Small Craft Advisory criteria through the period. Winds will largely have a southerly component late week into the weekend, before a backing a bit to the east early next week. There will be some uptick in speeds Thursday night, but should top out in the 15-20 kt range. Otherwise, winds will average 15 knots or less. Seas will be 2-4 feet. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. &&
Hazardous weather outlook, Aug 16, 3:50 PM EDT, 3 hours 31 minutes before
Hazardous Weather Outlook National Weather Service Charleston SC 350 PM EDT Wed Aug 16 2023 AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040- 042>045-047>052-172000- Charleston Harbor- Waters from South Santee River to Edisto Beach SC out 20 NM- Waters from Edisto Beach SC to Savannah GA out 20 NM- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans- Inland Bryan-Coastal Bryan-Inland Chatham-Coastal Chatham-Long- Inland Liberty-Coastal Liberty-Inland McIntosh-Coastal McIntosh- Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley- Inland Jasper-Beaufort-Coastal Colleton-Charleston-Coastal Jasper- Tidal Berkeley- 350 PM EDT Wed Aug 16 2023 This Hazardous Weather Outlook is for Atlantic coastal waters, southeast Georgia and southeast South Carolina. .DAY ONE...Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter assistance is not anticipated at this time.
In the hours before
Special weather statement, Aug 16, 3:19 PM EDT, 4 hours 2 minutes before
Special Weather Statement
National Weather Service Charleston SC
319 PM EDT Wed Aug 16 2023
SCZ045-161945-
Inland Berkeley-
319 PM EDT Wed Aug 16 2023
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF EASTERN LAKE
MARION...
...MARINERS SHOULD SEEK SAFE HARBOR...
At 319 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Eastern Lake Marion, or 16 nm northwest of
Moncks Corner, moving northeast at 10 knots.
HAZARD...gusty winds 30 to 40 knots.
SOURCE...Radar Indicated.
IMPACT...Expect briefly stronger winds and suddenly higher waves.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Boaters on the eastern portions of Lake Marion should seek safe
harbor immediately. If caught on the open water, stay as low as
possible and wear a personal flotation device. Remember, if you can
hear thunder you are at risk for being struck by lightning.
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3345 8017 3339 8013 3339 8022 3345 8022
3344 8021 3345 8021
TIME...MOT...LOC 1919Z 232DEG 11KT 3341 8020
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...45 MPHSpecial weather statement, Aug 16, 4:41 PM EDT, 2 hours 40 minutes before
Special Weather Statement National Weather Service Charleston SC 441 PM EDT Wed Aug 16 2023 SCZ045-162200- Inland Berkeley- 441 PM EDT Wed Aug 16 2023 ...STORMY AFTERNOON FOR THE SANTEE COOPER LAKES... Numerous thunderstorms will impact Lake Moultrie and the eastern portions of Lake Marion through 6 PM. These thunderstorms will be capable of producing wind gusts in excess of 30 knots, frequent cloud to water lightning and localized visibilities of 1 NM or less in heavy rainfall. Periods of locally higher waves can also be expected. Mariners are urged to seek safe harbor now before the strongest storms arrive. PRECAUTIONARY/PREPAREDNESS ACTIONS... If caught on the open water, stay as low as possible and wear a personal flotation device. Remember, if you can hear thunder you are at risk for being struck by lightning. Stay tuned to NOAA Weather Radio All Hazards or the Internet for the latest information from the National Weather Service. &&
Special weather statement, Aug 16, 5:44 PM EDT, 1 hour 37 minutes before
Special Weather Statement
National Weather Service Charleston SC
544 PM EDT Wed Aug 16 2023
SCZ043-044-162215-
Inland Colleton-Dorchester-
544 PM EDT Wed Aug 16 2023
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF COLLETON AND
DORCHESTER COUNTIES...
At 543 PM EDT, National Weather Service doppler radar indicated
strong thunderstorms along a line extending from near Canadys to near
Walterboro, and moving east at 15 mph.
HAZARD...excessive cloud to ground lightning.
SOURCE...Radar Indicated.
IMPACT...All outdoor activities should cease. Move indoors
immediately.
Some locations in the path of these storms include...
Walterboro, Cottageville, Round O, and Canadys.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive cloud to ground lightning is occurring with these storms.
Lightning can strike 15 miles away from a thunderstorm. Seek safe
shelter inside a building or vehicle.
&&
LAT...LON 3309 8038 3288 8050 3293 8073 3313 8059
TIME...MOT...LOC 2143Z 277DEG 15KT 3307 8056 3294 8067
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...<45 MPHLocal storm report, Aug 16, 6:00 PM EDT, 1 hour 21 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
600 PM EDT Wed Aug 16 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0550 PM Rain 1 ENE Dorchester 33.14N 80.38W
08/16/2023 M2.12 inch Dorchester SC Trained Spotter
A trained spotter measured 2.12 inches of rainfall that
fell within a 30 minute period near the cross streets of
Limestone Rd and Twin Oak Lane.
&&
Event Number CHS2301071
BRMLocal storm report, Aug 16, 6:59 PM EDT, 22 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
659 PM EDT Wed Aug 16 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0648 PM Rain 5 NNE Walterboro 32.97N 80.64W
08/16/2023 U0.00 inch Colleton SC Emergency Mngr
Emergency manager reported water in roadway blocking
both lanes near the intersection of Jefferies Hwy and
Cottonwood Lane due to heavy rainfall.
&&
Event Number CHS2301072
BRMSpecial weather statement, Aug 16, 7:21 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Charleston SC
721 PM EDT Wed Aug 16 2023
GAZ137-140-162345-
Inland McIntosh-Long-
721 PM EDT Wed Aug 16 2023
...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF MCINTOSH AND LONG
COUNTIES...
At 721 PM EDT, National Weather Service doppler radar indicated a
strong thunderstorm over Tibet, moving northeast at 20 mph.
HAZARD...strong winds 45 to 55 mph.
SOURCE...Radar Indicated.
IMPACT...Expect minor damage to tree limbs and blowing around of
light, unsecured objects.
Some locations in the path of this storm include...
Tibet, Jones, and South Newport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so. You can also email your
report to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3163 8175 3176 8164 3170 8150 3170 8147
3169 8146 3168 8147 3164 8143 3165 8142
3164 8139 3151 8159
TIME...MOT...LOC 2321Z 223DEG 16KT 3163 8162
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHThe office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 8:10 PM EDT | Special Weather Statement | CHS | Dorchester | 50 min |
| Aug 15, 8:15 PM EDT | Special Marine Warning | CHS | 61 min | |
| Aug 16, 3:18 PM EDT | Special Marine Warning | CHS | 57 min | |
| Aug 16, 3:19 PM EDT | Special Weather Statement | CHS | Clarendon | 26 min |
| Aug 16, 5:08 PM EDT | Areal Flood Advisory | CHS | Berkeley, Dorchester | 3 hr |
| Aug 16, 5:44 PM EDT | Special Weather Statement | CHS | Dorchester | 31 min |
| Aug 16, 5:58 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston, Colleton, Dorchester | 2 hr |
| Aug 16, 7:09 PM EDT | Areal Flood Advisory | CHS | Colleton, Dorchester, Hampton | 100 min |
| Aug 16, 7:35 PM EDT | Flash Flood Warning | CHS | Colleton, Dorchester | 5 hr |
| Aug 15, 8:13 PM EDT | Special Weather Statement | CHS | Bryan, Chatham, Liberty, Long | 47 min |
| Aug 15, 8:44 PM EDT | Special Weather Statement | CHS | Liberty, Long, McIntosh | 46 min |
Nearby
Special Weather Statements in Georgia, 2023Every special weather statement in 2023
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.